Emergency services are seen near a car following the detonation of a planted bomb in Tehran Nov. 29. Two car bomb blasts killed one Iranian nuclear scientist and wounded another in Tehran on Monday, Iran's al-Alam Arabic language television reported.

Two bomb blasts in the Iranian capital Monday killed a top nuclear scientist and wounded another.

State-controlled media immediately accused the US and Israel of being behind the assassination, which came days before Iran is scheduled to discuss its nuclear program with international officials. And on Sunday a trove of US embassy cables revealed by WikiLeaks revealed that multiple Arab countries have urged the US to bomb Iran’s nuclear facilities. Iran says its nuclear program is peaceful, while many Western nations accuse Tehran of using the program to develop nuclear weapons.

The wives of both men and one other person were wounded in the attacks, which took place in two separate locations. The Tehran Times called the bombs “terrorist attacks.”

AFP reports that Abbasi was a member of the Revolutionary Guard and "one of the few specialists who can separate isotopes," according to a state news website.

Shahriari worked with Iran’s Atomic Energy Agency, reports The New York Times. The agency’s head said he managed one of the organization’s “major projects.” He also issued a warning to Western nations. “Don’t play with fire,” he said, according to state media. “The patience of the Iranian people has its limits. If our patience runs out, you will suffer the consequences.”

Both men targeted Monday worked with a regional non-nuclear scientific research unit called Synchrotron-light for Experimental Science and Applications in the Middle East, or SESAME, reports The New York Times.

Unusually, its nine-member council includes representatives from Israel along with Iran and several other Muslim countries. It was not clear whether the killings of the two Iranian scientists were linked to their association with the organization.

Another scientist involved with SESAME was assassinated in January. Masoud Ali Mohammadi was also killed in a bomb attack, which Iranian officials also blamed on the US and Israel. But the AFP reports that Tehran’s deputy governor said the two attacks Monday were “different from previous assassinations.”